This is black replacement premium jumping mat made of permatron, for 12ft frame trampolines.The mat diameter is 125 inches with 72 v-rings and fits 5.5 inch springs. Please make sure to measure your current mat size, springs size and count your mat's v-rings to select the appropriate model for your trampoline. For more information on how to measure your parts correctly, please check out our How To Measure section or the video below.